For the pastry, place flour in medium bowl; rub in butter. Add eggs; mix to a soft, smooth dough. Cover; refrigerate for 30 mins, or until firm.,Preheat the oven to 350°F. For the filling, steam or microwave spinach until wilted; drain. Squeeze to remove excess liquid; chop finely. In a large bowl, combine spinach, leek, pine nuts, herbs, 3 eggs, cheeses, peppercorns and breadcrumbs; mix well.,Lightly grease a baking pan; sprinkle with half the sesame seeds. Cut pastry in half; roll out half between sheets of parchment paper into a 9-inch circle. Place on seeds. Roll out remaining pastry to a 10-inch circle.,______,Bake pie for 40 mins, or until well browned and cooked through. Let stand for 5 mins.,Meanwhile, for the tomato coulis, heat oil in a medium saucepan on medium heat. Add remaining ingredients and cook for 40 mins. Push mixture through sieve; discard pulp. Return liquid to pan; bring to a boil. Reduce heat to low; simmer for 20 mins, or until thickened slightly. Serve with pie.